Automobile-radiator



J; FRAIDUS, AUTOMOBILE RADIATOR.

APPLICATION FILED NOV- 25' 1919.

1 #100,353. Patented Dec. 13, 1921.

awe/whom Joe Pen/nus cairn!) srarss PATENT ()FFICE.

JOE FRAIDUS, or NEWARK, NEW JERSEY, ASSIGNOR T0 SAMUEL 503mm, on NEW YORK, N. Y.

AUTOMOBILE-RADIATOR.

Specification of Letters Patent.

Patented Dec. 13,1921;

Application filed November 25,1919. Serial No. 340,553.

To all whom it mag concern Be it known that I, don F RAIDUS, subject of the Government of Russia, and resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Automobile- Radiators, of which the following is a specification.

This invention relates to radiators for cooling the circulating liquid of cooling systems for internal combustion engines such as used in automobiles.

The object of this invention is to provide a radiator of the character described which shall be strong and durable, afford a large liquid capacity, and a high degree of cooling efiiciency.

Another object of this invention is to provide a radiator of the character described which shall have the advantages aforesaid and yet be cheap to manufacture, simple and compact in construction and easy to repair.

Other objects and advantages of this invention will appear from the detalled description and the features of novelty will be particularly pointed out in the claims.

In the drawing accompanying this specification and forming a material part thereof Figure 1 is a perspective view of a radiator core embodying my invention viewed along line 1--1 of Fig. 2.

Fig. 2 is a plan view of the core section shown in Fig. 1;

Fig. 3 is a fragmentary perspectlve view showing two complementary corrugated sheets used in assembling the core; and

Fig. 4 is a fragmental detailed section taken along line 45-4 of Fig. 2.

Referring in detail to the drawing, the radiator core comprises a series of tortuous spaces or conduits 10 for the circulating liquid, the walls of which form a1r tubes 11 through which the air is blown. These water channels 10 and air tubes 11 are constructed in the following manner. A plurality of sheets of thin metal are corrugated by a rolling process so as to provide zigzag units such as shown in Fig. 3 having a series of alternately parallel horizontal faces 12 running at an angle in one direction and a series of alternately parallel horizontal faces 13 running at an angle to the direction of said first series of faces, the corresponding faces of the series 12 and 13 being adjacent to each other and meeting in a vertical flat rib 14, as will be clear from Fig. 3. The upper and lower ends of these sheets are indented to form a ridge 15' and small portions 16 offset fromthe faces 12 and 13. These offset portions meet in a sharp edge 17. In assembling'the radiator core sections made from four such sheets are constructed in the following manner: Two such sheets 18 and 19 are placed to gether with the vertical faces 12 and 13 on each of the sheets running in opposite directlons and these are soldered together along the sharp edges 17 as at 20, so as to inclose therebetween the substantial trapezoidal tubes 11. Complementary sheets 22, 23 are then placed on either side of the two sheets such as 18 and 19 already secured together in the manner aforementioned, so that each of said complementary sheets is in registry with the outer walls of the air tubes 11 as will be readily understood. In this manner the corresponding offset portions 16 on the sheets 18, 19, and 22, 23 respectively meet to form a close fit at their top and bottom ends, while by reason of the offsetting of the faces 12 and 13 from these ends as herein before described a tortuous channel or conduit 10 is provided between the air tubes 21 and these outer sheets 22 and 23.

The complementary sheets 22 and 23 will now serve each as one-half or a semi-section of further tubes 21 formed by soldering to each of them corresponding sections in the manner already described with reference to the securing together with sheets such as 18 and 19. Complementary sections are then secured on the outer faces of the additional tubes 21 so formed and in registry therewith to form additional channels 10 in the manner described with reference to sheets 22 and 23. This process is repeated until a radiator core of any desired size is obtained.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A radiator comprising a plurality of rows of tubes formed from sheets of metal,-

said sheets being corrugated to provide a series of parallel inclined faces and another series of parallel inclined faces alternating with said first mentioned series and running at an angle thereto, the widths of one of said series of parallel faces being substantially greater than the widths of the other alternate series of parallel faces so asv to form substantially trapezoidal air openings when said sheets are placed together, said sheets being indented at the upper and lower ends thereof to form offset portions whereby two such complementary sheets unite at their lower and upper ends to form a close fit and inclose between the faces thereof a tortuous channel for the liquid to be cooled.

2.. A radiator comprising a plurality of core sections suitably joined together, each of said sections comprising a pair of corrugated sheets of metal having a series of inclined faces and another series of parallel inclined faces alternating with said first mentioned series and running at an angle thereto, the width of the face of one of said series being substantially greater than the corresponding width of theother'alternate series, said sheets being indented at the upper and lower ends thereof to offset portions, meeting in a sharp edge, said pair of sheets being arranged with their ofiset portions in registry with each other and united at their said offset portions to inclose between the parallel faces thereof a tortuous channel for the liquid to be cooled, and another such pair of united sheets arranged in opposed relation to said first mentioned pair and joined thereto on the sharp edges of the offset portions so as to inclose a substantial trapezoidal air opening.

Signed at New York city, in the county of New York and State of'New York, this 29th day of October, A. D. 1919.

JOE FRAIDUS. 

